NZQA registered unit standard version 1 Page 1 of 5. Interpret paving instructions and construct bituminous mix layers

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1 Page 1 of 5 Title Interpret paving instructions and construct bituminous mix layers Level 4 Credits 14 Purpose People credited with this unit standard are able to: interpret paving instructions for bituminous mix layers; prepare to construct bituminous mix layers; and construct bituminous mix layers. Classification Infrastructure Works > Bitumen Surfacing Construction Available grade Achieved Explanatory notes 1 The following requirements apply to this unit standard, and must be complied with: The Safe Handling of Bituminous Materials Used in Roading Code of Practice RNZ 9904:2006, Roading New Zealand, available for purchase at Code of Practice for Temporary Traffic Management (CoPTTM), New Zealand Transport Agency, available at New Zealand Transport Agency specifications at NZTA M/10 Specification for Dense Graded and Stone Mastic Asphalt. NZTA P23: Performance Based Specification for Hotmix Asphalt Wearing Course Surfacing; Site safety plan; Contract quality plan; Paving plan. 2 Assessment against this unit standard must be based on evidence from a workplace context. 3 Definitions Company procedures refers to all documented policies, procedures, and methodologies of the candidate s employer at the time of training, including but not limited to those relating to health, safety, environment, quality, and operations. Maintenance period means the period of time from the removal of temporary speed restrictions until final acceptance by the engineer, during which time the contractor may have corrective action obligations specified in the contract specifications. OGPA means open graded porous asphalt. Protection period means the period of time from the completion of construction until the removal of temporary speed restrictions, during which time the contractor may have corrective action obligations specified in the contract specifications.

2 Page 2 of 5 Outcomes and evidence requirements Outcome 1 Interpret paving instructions for bituminous mix layers. paving instructions may be in contract specifications, and/or plans, tender documents, and instructions; instructions for three jobs with varying requirements, such as different: surface layers, such as wearing, levelling, base; clients, such as large commercial contract, port, NZTA resurfacing, local authority resurfacing, road reconstruction; mix types, mix thickness, mix binder; paving details, such as tack coat, application rate, membrane seal, and binder type. 1.1 Pretreatment requirements are identified in site instructions and explained in terms of what is required to meet them. pretreatments milling, patching, levelling, cleaning, sweeping, tack coat. 1.3 Plant and equipment requirements are identified in paving instructions and explained in terms of selecting what is appropriate and available for each job. plant brooms, loaders, delivery vehicles, trucks, paving machines, rollers; equipment levels, hand tools. 1.4 Laying specifications are identified in paving instructions and explained in terms of meeting requirements for each job. specifications relating to air temperature, ground temperature, paving season, mix temperature, layer thickness, compaction, joint locations, shape, trimming, edges, shoulders. 1.5 Compaction specifications are identified in paving instructions and explained in terms of procedures for meeting requirements for each job. equipment, water, critical timing; rolling sequence joints, edges, breakdown, second, finishing; roller types -- static, vibratory; compaction adjustment density, compacted depth, thickness, surface consistency and shape; compaction tests non destructive, cores; texture, target air voids. 1.6 Site safety and environmental protection factors are identified in paving instructions and explained in terms of requirements for each job.

3 Page 3 of Sampling and testing requirements for bituminous mix laying are identified in paving instructions and explained in terms of scheduling for the job. density testing, mix sample, tack coat sample, mix temperatures into truck, out of tuck into paver, out of paver, mix depths, time arrived, time into paver, rolling pattern completed. Outcome 2 Prepare to construct bituminous mix layers. evidence is required of preparing and laying each of the following layers and mix types in any combination: layers base course, wearing course, levelling; mix types M10, M14, M15, M20, M28, M40, SMA, OGPA. 2.1 Preconstruction checks are carried out and surface is swept in accordance with company procedures. checks day s weather, rain radar, three day forecast, temperatures, preseal repairs completed, construction signed off ready for sweeping, start and finish locations. 2.2 Requirements for site safety, environmental protection, and temporary traffic management are implemented in accordance with company procedures. 2.3 All objects and surfaces that need protection are either protected or marked and recorded so they can be found and/or reinstated after paving in accordance with company procedures. examples of objects needing protection service covers, fire hydrants, adjacent surfaces, roadmarking offsets. 2.4 Parties affected by site works are identified and notified in accordance with contract requirements and company procedures. Outcome 3 Construct bituminous mix layers. evidence is required of preparing and laying each of the following layers and mix types in any combination: layers base course, wearing course, levelling; mix types M10, M14, M15, M20, M28, M40, SMA, OGPA. 3.1 Mix deliveries are managed in accordance with paving plan and company procedures.

4 Page 4 of 5 changes in requirements are to be communicated to the mix plant in time to avoid over supply and minimise waste. 3.2 Laying process is monitored for quality and actions are taken to maintain compliance with the contract quality plan in accordance with company procedures. temperatures, layer thickness, avoiding segregation, joints. 3.3 Compaction techniques and roller patterns are managed in accordance with the paving plan and company procedures. evidence is required of undertaking preliminary tests to aid in controlling layer thickness. 3.4 Hand work is managed to ensure mix layer complies with contract requirements. hand work edging, spreading, finishing, areas that cannot be reached by the paving machine; management ensures minimal handling, avoids segregation, and compacts mix as soon as possible. 3.5 Traffic and site protection are monitored in accordance with the traffic management and site safety plans. 3.6 Actions required in the event of uncertainty over technical requirements are explained and followed in accordance with company procedures. examples of uncertainty mix seems different, site not ready for laying, more pre-levelling is needed than planned for, membrane seal not done, preseal repairs not completed. 3.7 Weather conditions are monitored and consequent adjustments are made to the work programme as required. rain radar, three day forecast. Planned review date 31 December 2019 Status information and last date for assessment for superseded versions Process Version Date Last Date for Assessment Registration 1 19 February 2015 N/A Consent and Moderation Requirements (CMR) reference 0101 This CMR can be accessed at

5 Page 5 of 5 Please note Providers must be granted consent to assess against standards (accredited) by NZQA, before they can report credits from assessment against unit standards or deliver courses of study leading to that assessment. Industry Training Organisations must be granted consent to assess against standards by NZQA before they can register credits from assessment against unit standards. Providers and Industry Training Organisations, which have been granted consent and which are assessing against unit standards must engage with the moderation system that applies to those standards. Requirements for consent to assess and an outline of the moderation system that applies to this standard are outlined in the Consent and Moderation Requirements (CMRs). The CMR also includes useful information about special requirements for organisations wishing to develop education and training programmes, such as minimum qualifications for tutors and assessors, and special resource requirements. Comments on this unit standard Please contact the qualifications@infrastructureito.org.nz if you wish to suggest changes to the content of this unit standard.